1320432 has 20 divisors (see below), whose sum is σ = 3411240. Its totient is φ = 440128.

The previous prime is 1320427. The next prime is 1320433. The reversal of 1320432 is 2340231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13707 + ... + 13802.

It is an arithmetic number, because the mean of its divisors is an integer number (170562).

2^1320432 is an apocalyptic number.

1320432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1320432 is an abundant number, since it is smaller than the sum of its proper divisors (2090808).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1320432 is a wasteful number, since it uses less digits than its factorization.

1320432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27520 (or 27514 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 1320432 is about 1149.1005177964. The cubic root of 1320432 is about 109.7080965941.

Adding to 1320432 its reverse (2340231), we get a palindrome (3660663).

The spelling of 1320432 in words is "one million, three hundred twenty thousand, four hundred thirty-two".